### TBA

- Series
- Geometry Topology Seminar
- Time
- Monday, April 25, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Ruffoni, Lorenzo – Tufts University – lorenzo.ruffoni@tufts.edu

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- Series
- Geometry Topology Seminar
- Time
- Monday, April 25, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Ruffoni, Lorenzo – Tufts University – lorenzo.ruffoni@tufts.edu

- Series
- Geometry Topology Seminar
- Time
- Monday, April 18, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Samantha Allen – UGA

- Series
- Geometry Topology Seminar
- Time
- Monday, April 4, 2022 - 14:00 for
- Location
- Skiles 006
- Speaker
- Luya Wang – University of California, Berkeley

- Series
- Geometry Topology Seminar
- Time
- Monday, March 14, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Assaf Bar-Natan – University of Toronto

- Series
- Geometry Topology Seminar
- Time
- Monday, March 7, 2022 - 14:00 for
- Location
- Skiles 006
- Speaker
- Juan Muñoz-Echániz – Columbia University

- Series
- Stochastics Seminar
- Time
- Thursday, March 3, 2022 - 15:30 for 1 hour (actually 50 minutes)
- Location
- ONLINE
- Speaker
- David Harper – Georgia Tech – dharper40@gatech.edu

In first-passage percolation (FPP), we let \tau_v be i.i.d. nonnegative weights on the vertices of a graph and study the weight of the minimal path between distant vertices. If F is the distribution function of \tau_v, there are different regimes: if F(0) is small, this weight typically grows like a linear function of the distance, and when F(0) is large, the weight is typically of order one. In between these is the critical regime in which the weight can diverge, but does so sublinearly. This talk will consider a dynamical version of critical FPP on the triangular lattice where vertices resample their weights according to independent rate-one Poisson processes. We will discuss results which show that if sum of F^{-1}(1/2+1/2^k) diverges, then a.s. there are exceptional times at which the weight grows atypically, but if sum of k^{7/8} F^{-1}(1/2+1/2^k) converges, then a.s. there are no such times. Furthermore, in the former case, we compute the Hausdorff and Minkowski dimensions of the exceptional set and show that they can be but need not be equal. These results show a wider range of dynamical behavior than one sees in subcritical (usual) FPP. This is a joint work with M. Damron, J. Hanson, W.-K. Lam.

This talk will be given on Bluejeans at the link https://bluejeans.com/283104959/2281

- Series
- Geometry Topology Seminar
- Time
- Monday, February 28, 2022 - 14:00 for 1 hour (actually 50 minutes)
- Location
- Speaker
- Seraphina Lee – University of Chicago – seraphinalee@uchicago.edu

- Series
- Job Candidate Talk
- Time
- Monday, February 21, 2022 - 11:00 for 1 hour (actually 50 minutes)
- Location
- online
- Speaker
- Jiuya Wang – University of Georgia – jiuya.wang@uga.edu

Class group is a central object of the study in number theory. We will give an overview of our understanding of the distribution of class groups, with an emphasis on recent progress. In particular, we will explain how the use of symmetry in multiple ways turns out to be an essential tool to obtain many new results on the distribution of class groups.

- Series
- Stochastics Seminar
- Time
- Thursday, February 17, 2022 - 15:30 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Yuri Bakhtin – Courant Institute, NYU

- Series
- Job Candidate Talk
- Time
- Thursday, February 17, 2022 - 11:00 for 1 hour (actually 50 minutes)
- Location
- https://gatech.bluejeans.com/939739653/6882
- Speaker
- Cosmin Pohoata – Yale University – andrei.pohoata@yale.edu

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